switchtrue · January 6, 2018 06:09 · Jan 19, 2017 · Jan 19, 2017 · Aug 24, 2016 · Aug 24, 2016
diff --git a/nodemuc.md b/nodemuc.md
@@ -26,9 +26,14 @@ Install esptool:
 pip install esptool
 ```
 
+Erase:
+```
+esptool.py --port /dev/tty.wchusbserialfd120 erase_flash
+```
+
 Flash:
 ```
-esptool.py --port /dev/tty.wchusbserialfd120 --baud 115200 write_flash --flash_mode qio --flash_size 32m 0x0 esp8266-20160818-v1.8.3-35-g49dd532.bin --verify
+esptool.py --port /dev/tty.wchusbserialfd120 --baud 115200 write_flash --flash_size=detect 0 ~/Downloads/esp8266-20170108-v1.8.7.bin --verify
 ```
 
 Connect to the NodeMCU:

diff --git a/nodemuc.md b/nodemuc.md
@@ -7,6 +7,13 @@ Install a serial driver for the NodeMCU from: [http://www.wch.cn/download/CH341S
 Plugin the NodeMCU and see if you can see it at `/dev/tty.wchusbserialfd120`
 **NOTE**: If you can't find it at the above locations try `ls /dev/cu.*` and see what else is available.
 
+**OSX Sierra Important Note**: After upgrading to Sierra plugging in my NodeMUC I kept getting Kernel panics and the laptop would restart. To fix this I uninstalled the original drivers with the following commands, restarted and then re-installed from the link above.
+```
+sudo rm -rf /Library/Extensions/usbserial.kext
+sudo rm -rf /System/Library/Extensions/usb.kext
+# Restart computer now
+```
+
 Grab firmware from here: https://micropython.org/download/
 
 Install pyserial:

diff --git a/nodemuc.md b/nodemuc.md
@@ -33,22 +33,22 @@ Might need to hit enter a few times at REPL to get `>>>`
 
 try it:
 ```
-print('Hello, World!')
+>>> print('Hello, World!')
 ```
 
 Connect to a network:
 ```
-import network
-n = network.WLAN(network.STA_IF)
-n.active(True)
-n.connect('<SSID>', '<password>')
+>>> import network
+>>> n = network.WLAN(network.STA_IF)
+>>> n.active(True)
+>>> n.connect('<SSID>', '<password>')
 ```
 
 Note: Don't get SSID and password wrong as it seems to indefinitely reconnect even after re-flashes and log to stdout, you can enter paste mode (ctrl+e) and enter the above code again to retry but its tricky.
 
 
 Start the Web REPL:
 ```
-import webrepl
-webrepl.start()
+>>> import webrepl
+>>> webrepl.start()
 ```
diff --git a/nodemuc.md b/nodemuc.md
@@ -0,0 +1,54 @@
+NodeMCU mode: Keyes NodeMCU
+OS: Mac OS X (macOS)
+
+
+Install a serial driver for the NodeMCU from: [http://www.wch.cn/download/CH341SER_MAC_ZIP.html](http://www.wch.cn/download/CH341SER_MAC_ZIP.html)
+
+Plugin the NodeMCU and see if you can see it at `/dev/tty.wchusbserialfd120`
+**NOTE**: If you can't find it at the above locations try `ls /dev/cu.*` and see what else is available.
+
+Grab firmware from here: https://micropython.org/download/
+
+Install pyserial:
+```
+pip install pyserial
+```
+
+Install esptool:
+```
+pip install esptool
+```
+
+Flash:
+```
+esptool.py --port /dev/tty.wchusbserialfd120 --baud 115200 write_flash --flash_mode qio --flash_size 32m 0x0 esp8266-20160818-v1.8.3-35-g49dd532.bin --verify
+```
+
+Connect to the NodeMCU:
+```
+screen /dev/cu.wchusbserialfd120 115200
+```
+
+Might need to hit enter a few times at REPL to get `>>>`
+
+try it:
+```
+print('Hello, World!')
+```
+
+Connect to a network:
+```
+import network
+n = network.WLAN(network.STA_IF)
+n.active(True)
+n.connect('<SSID>', '<password>')
+```
+
+Note: Don't get SSID and password wrong as it seems to indefinitely reconnect even after re-flashes and log to stdout, you can enter paste mode (ctrl+e) and enter the above code again to retry but its tricky.
+
+
+Start the Web REPL:
+```
+import webrepl
+webrepl.start()
+```